When run in debug in PyCharm 2021.3 (Community Edition) on Mac, the code:
import pandas as pd
x = pd.DataFrame()
from scipy.stats import poisson
Generates the exception:
...
File "/.../venv/lib/python3.10/site-packages/numpy/core/getlimits.py", line 518, in __init__
self.dtype = numeric.dtype(type(int_type))
TypeError: 'NoneType' object is not callable
(the None variable is numeric.dtype)
Python 3.10.0
dependencies: pip install numpy==1.21.2 pandas==1.3.5 scipy==1.7.3